Moon's 'wobble' will cause decade of dramatic increases in flood numbers, NASA says
says that every coast in the United States will face rapidly increasing high tides that'll see a tsunami of problems for the globe.
The conclusion, which was published in the Nature Climate Change journal by Nasa Sea Level Change Science Team from the University of Hawaii, has to do with the moon's orbit, which takes 18.6 years to complete according to Nasa.
Nasa explains that these floods will likely occur in clusters that last a month or longer, meaning their impact will be much more severe than usual, depending on the positions of the Sun, Moon and Earth.
For half the time period the tides won't be an issue, but the "high tides get higher, and low tides get lower. Global sea-level rise pushes high tides in only one direction – higher. So half of the 18.6-year lunar cycle counteracts the effect of sea-level rise on high tides, and the other half increases the effect," Nasa explained.
Currently, the moon is in its tide-amplifying cycle and there is no cause of concern of dramatic flooding.
However, when the moon returns to the tide-amplifying cycle, the seas will have had nearly a decade to rise. ■